Crusher



E. L. SANBORN.

CRUSHER.

APPLICATION FILED FEB. 18. I918.

Lggg g55 Patented Jan. 3, 11.922

.W/T/VESSES.

g STATE-S Par-ENE EUGENE L. SANIBORN, F MILWAUKEE, WISCONSIN, 'ASSIGNORT0, SMITH ING WORKS, OF MILWAUKEE, WISCONSIN, A CORPORATION OFWISCONSIN.

I cansnnn.

Application filed February 18, 1918. Serial No. 217,959.

To aZZ whom it may oofrwe'm:

Be it known that I, EUGENE L. 'SANBORN, a citizen of the United States,and resident of Milwaukee, in the county of Milwaukee and State of Wisco sin, have invented new and useful Impro ements in Crushers, of

which the fbllowing is a description, referfixed vertical central shaftforming a tierod connecting the arch of the upper sec tion of the framewith the base formlng the lower section of the frame, the shaftconstituting a fixed mandrel for the crusher head andits operatingsleeve. The invention particularly relates to that type of crusher inwhich the crusher head is broad and flat though conically shaped and theconcave is downwardly flaring to enlarge the diameter of the circularpassageway for crushed material toward its lower or discharge end, wherethe crushing faces most nearly approach eachother. v

In mathines of thi charager it is desirable to ake the frame mit theentry and removal of the crusher head.- It is also desirable to rovidean adjustment for varying the distance be-' .tween the crusher head andthe concave in order that the degree of fineness of the work may beregulated.

It has been'proposed to form :thehead in two parts, one telescopingtheother, and

adjustable with relation tov the other to raise and lower the crushingsurface in the manner shown in the patent to Thomas L. Smith for rockcrushers No. 1,050,398, dated Jan. 14, 1913. I posedto permit thecrusher head to rest on an adjusting ring having" stepped cam faces, inthe manners'hown in the patent to E. B. Symons for stone crusher, No.1,000, 049, dated August 8,1911. It has also been proposed to providefor adjustment between whereby the concave may be raised and loweredwith respect to the crusher head in the manner covered by my. jointapplication. with Thomas L. Smith for reduction crushers, Serial No.129,665, filed Nov. 6, 1916, Such methods of obtaining the desiredadable between. the concave and the supporting base to peracross thehopper. I 15 issecurely fixed at its upper and lower It has further beenpro-- shaft and the walls of 1 justment haveanswered the purpose 'wellin actual practice, but for larger and heavier crushers greater rigldityof frame structure is desired, as well as a simplification of thecrushing head structure whereby it will consistiof a singlememberinstead of telescoping members, and on account of the g'reatweight ofthe crushing head it is desired to provide a more powerful adjustingmeans which will retain its adjustments. The present invention,therefore, seeks to Specification of- Ietters Patent, Patented Jan. 3,1922. I

provide the necessary adjustment by raising. v and lowering the endthrust bearing ring on Which the crusher head rests so that the crusherheadis moved bodily toward or away from the concave, such adjustmentbeing accompllshed by means of jack screws and being maintained by meansof shims fitting frame;

With'theabove and other objects in view, the invention consists in thecrusher, its parts and combinations. of parts as herein between thebearing ring and thebase claimed and all equivalents.

Referring to the accompanying drawing which represents a centralverticalsectional ance with this invention, 10 indicates a base frame to whichisrigidly clamped an up-' per frame section 11 forming the support for thedownwardly flaring concave 12 and also forming theho or 13 andtthe arch14 n upright rigid shaft ends in the arch 14 and in the baseglO. re-

view of a crusher. constructed in accord spectively. For this purpose itis preferred to taper the ends of the shaft 15 and sur round them withcorrespondingly shaped bushings 16 which have radial slots at theirupper and lower edges alternating and extending nearly the full lengthof the bushings so as to make them flexible. Nuts 17 threaded on screwstuds 18 at the ends of the shaft "en age' followers 19 and force themagainst t e bushings -16 to crowd said bush-- ings between'the conicalportions .of the the cylindrical bores the arch and base. the uppersection of the frame and the base 'on meshing with a beveled pinion 22on the end of a drive shaft 23 which is driven from any suitable motorbymeans of a belt pulley 2A. A bell-shaped crusher head 25 fits aroundthe sleeve 20 which is eccentric to impart a gyratory motion to thecrusher head. The crusher head is supported by a bearing ring 26 whichhas a downwardly extending annular flange fitting within a" cylindricalupstanding wall 27 on the base around the beveled gear 21 and forming anenclosing housing for the gears to protect them from dust and dirt. Thecrusher head has a bearing plate 28 resting flat against the horizontalbearing surface of the ring 26 with a broad bearing surface forsupporting the weight of the crusher head and resisting the stressthereon incident to the crushing operation. A number .of jack screws 29,preferably threethough only one member and bearing on the dust collar.It is not desirable to support the crusher head the shims chosen, sothat the weight of the 40,

is shown, are threaded through the upstanding cylindrical wall 27 andbear against the bottom surface of the flanged bearing ring 26 forraising and lowering said bearing.

ring and the crusher head supported there- 'by. In these adjustments thecrusher head merely slides on the eccentric sleeve 20, while its dustring 30 bearing onits upper end and let into a groove in the arch 14,moves with it as permitted by adjustments of set screws 31 threadedthrough said arch in its adjusted position solely'by means of the jackscrews 29 and consequently arcshaped metal blocks or shims 32 are fittedin the space between the bearing ring 26 and the, top of the cylindricalwall 27. There may be a number of these shims of different thicknessesto select from so that inany. particular adjustment of the crusher headthis space is closely fitted by means of crusher head and the stressimposed on it during the crushing operation will be taken by the shimsdirect, to the relief of the jack screws. A metal band 33 surrounds thespace containing the'shims and as the flange of the bearing ring 26forms the inner wall ,of such space, the shims are entirely en- ,mentwith the cylindrical wall 27 in all ad closed and cannot work loose. Themetal band 33 is preferably contractible with a clamping setscrew '34connecting ears at its be clamped in place or end so t at it ma releasedas deslre The flange of the bearlng ring 26 .remains intelescopingengagejustments .of the crusher head to hold the earmg ringin placeand resist the lateral stress thereon incident to the gyratorymovements of the crusher head supported by it.

In operation the rotary movements of the I eccentric sleeve '20 impartedto, it by the jeling in a circle within the. concave. frame, thou hformed in sections to permit drivinfg shaft'23 cause the crusher head 25to move toward the concave at a point trav- The of the assem ling orremoval of the crusher head and its associated parts on the rigid butwhen the adjustment is made upstandin shaft '15, is rigidly connectedwithout a justment between its sections so that there can be no yieldingor looseness with respect thereto. The heavy crusher head is supporteddirectly upon the flanged bearing ring 26. with its plate 28 slidablybearin thereon over a broad flat surface and said bearing ring'isconfined in place by its flange engaglng the upstanding cylindrical wall27 and is adjusted to produce the desired opening between the crusherhead and the concave by means of the jack screws 29. The jack screws/aresuitable for use in raising and lowering the heavy crusher head toaccomplish the desired adjustment, they are relieved 'of further duty bythe insertionof the shims 32 to take the stress of operation and saidshims are prevented from displace- ,ment by the surrounding retainingband 33.

The crusher of this invention is adapted for thorough lubrication, agear pump 35 bein beve ed gear connection with the drive shaft '23 andserving to'pump. lubricant from a tank 37 through apipe 38 to apassageway in the frame leading to a bore within the upstanding shaft15. From this bore extend radial passa eways to feed the lubricant tothe bearing etween the said shaft and the sleeve 20, while openings 39through the sleeve 20 register w1th the said passageways toconductlubricant therefrom to the bear- .ing between the crusher headand the sleeve.

The flat bearing of the crusher head on the bearing ring 26 and the dustring 30 prethe crusher head with its upper internal diameter smallerthan the diameter of the lower part of the crusher head so that thecrusher head is incapable of being passed therethrough, a framesurrounding the conshown driven by a shaft 36 having cave, a base onwhich the frame is removably mounted to permit of the removal of thecrusher head,v and a stationary shaft rigidly secured to the base andthe frame for tying them together, saidcrusher head bfillg movablymounted on the stationary s a 2. In a crusher, a downwardly flaring concave support, a downwardly flaring concave therein, a conical crusherhead within the concave having a lower part of greater diameter than theinternal diameter of the upper part of the concave'support whereby it isincapable of passing therethrough, a

base on which the concave support is removably mounted to permit theremoval of the crusher head, an arch'across the upper end of the concavesupport, and a vertical shaft rigidly secured to the arch and to thebase for tying them together, said crusher head being mounted on theshaft.

3. In a crusher, a downwardly flaring conical concave support, adownwardly flaring concave therein, a conical crusher head within theconcave having a lower part with a diameter greater than the internaldiameter of the upper part of the concave so that it is incapable ofpassing therethrough, a base on which the concave support is removablymounted to permit of theremoval of the crusher head, an arch extendingacross the upper end of the concave support, a vertical shaft clamped.to the base and to the arch for tying them together and relieving theconnection between the base and the concave support ofthe' workingstress tending to separate them, and a suitably driven eccentric sleevesurroundin the shaft and having the crusher head loose y mountedthereon.

4. In a crusher, a conical crusher head, a downwardly flaring concavesurrounding the crusher head, a frame surrounding the concave, a base onwhich the frame is remov-- ably mounted to permit of the removal of thecrusher head, a stationary shaft rigidly secured to the base and theframe for tying them together, and means for vertically adjusting theposition of the crusher head on the stationary shaft.

5. In a crusher of the type wherein a conical crusher head is surroundedby a downwardly fiaring concave so that they are subjected to verticalstresses and wherein the concave is supported by a frame in sectionsseparable along a line beneath the concave for permitting removal of thecrusher head, a means to reinforce the connection of the frame sectionsand to take the said vertical stress comprising a central stationaryvertical shaft rigidly secured at its ends to the frame sections andhaving the crusher head rotatably mounted thereon.

- In testimony whereof, I afiix my signature, in presence of twowitnesses.

EUGENE L. SANBORN. Witnesses:

CHARLES F. SMITH, ALEXANDER LORN MUNRO.

